An Efficient Safety Message Transmission Protocol for Secure Grouping of Vehicles Vanet

Authors : Dr.V.Umadevi, R.Ravindhiran.

Volume/Issue : Volume 3 - 2018, Issue 8 - August

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VANETs have been a vital part in the associated vehicle venture , which has been driven by the U.S Department of Transportation in an e ort to enhance driver well-being and help individuals drive vehicles all the more effectively. The associated vehicle venture has become a promising answer for astute transportation framework. Thus, numerous auto mak-ers are starting to build up the associated vehicles. The improvement and trial of associated vehicles requires numerous testbeds in different areas. the VANETs standards have distinguished channel structures. The VANETs standard supports six service channels (SCHs) and one control channel (CCH). Each of these seven channels has a 10 MHz bandwidth and a 50 ms interval sharing a 100 ms interval equally. Vehicles are free to join any one of six service channels during SCH intervals. Usually safety information is transmitted in a short-text message format. This short message ensures fast and reliable delivery in restricted (e.g., 10 MHz) and unreliable channels in VANETs. the proposed algorithm for utilizing multiple channels is to divide the entire multimedia safety application information into packets considering the number of available SCHs and deliver the packets in each SCH. This scheme is called divide-anddeliver. This approach minimizes the amount of bandwidth used in each channel when delivering multimedia messages. With the multi-hop forwarding, the divide-and-deliver scheme, however, can deliver multimedia messages quickly to the target vehicle or infrastructure with fewer CCH intervals.


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